A look at Beijing's Blue Zoo aquarium (7 images)

A Chinese girl watches a shark swim by her in Beijing's Blue Zoo aquarium, the largest of its type in Asia, on March 31, 2011. The aquarium's main tank holds 3.5 million liters of artificially produced salt water that sustains a complete eco-system and allows thousands of fish to thrive in as natural an environment as possible. UPI/Stephen Shaver

Chinese men wait outside Beijing's Blue Zoo aquarium, the largest of its type in Asia, on March 31, 2011. The aquarium's main tank holds 3.5 million liters of artificially produced salt water that sustains a complete eco-system and allows thousands of fish to thrive in as natural an environment as possible. UPI/Stephen Shaver

A Chinese man watches a large stingray swim by in Beijing's Blue Zoo aquarium, the largest of its type in Asia, on March 31, 2011. The aquarium's main tank holds 3.5 million liters of artificially produced salt water that sustains a complete eco-system and allows thousands of fish to thrive in as natural an environment as possible. UPI/Stephen Shaver

A sea turtle checks out a group of Chinese visiting Beijing's Blue Zoo aquarium, the largest of its type in Asia, on March 31, 2011. The aquarium's main tank holds 3.5 million liters of artificially produced salt water that sustains a complete eco-system and allows thousands of fish to thrive in as natural an environment as possible. UPI/Stephen Shaver